This Thermomix apple cinnamon upside-down cake is a perfect dessert for any occasion. The cake is moist and tender, with a perfect balance of sweetness and spice. The recipe calls for fresh apples, cinnamon, and a few other simple ingredients. The Thermomix makes quick work of the batter, and the cake bakes up beautifully in the oven. Serve it warm with a drizzle of caramel sauce or a scoop of vanilla ice cream for a perfect dessert.